Register-hook.



PATENTED DEC. 24, 1907.

W. L. HAMILTON;

REGISTER HOOK. I APPLICATION FILED APR. 29,1907

WILLIAM L. HAMILTON, OF CHICAGO, ILLINOIS.

RE GISTER-HOOK.

Specification of Letters Patent.

Patented Dec. 24:, 1907.

Application filed April 29, 1907. Serial No. 371001.

To all whom it may concern:

Be it known that I, IVILLIAM L. HAMILTON, a citizen of the United States, residing in the city of Chicago, county of Cook, and State of Illinois, have invented a new and useful Improvement in Register-Hooks Used by Printers to Adjust and Hold Printing-Plates ina Form Made Up for Printing Purposes.

The object of my invention is to simplify the construction, provide for quicker and easier adjustment, better'holding power, and greater strength and for a narrower margin between printing plates.

' The manner in which I accomplish my object is described in the following specification and illustrated in the accompanying drawings in which:

Figure 1 is a front end elevation. Fig. 2 is a side elevation. Fig. 3 a longitudinal vertical central section on the line 2 2 Fig. 1. Fig. 4 is a top plan view. Fig. 5 is a cross section on the line 55 Fig. 3 and Fig. 6 is a longitudinal view of the threaded shaft.

In the drawings A indicates the main body which is rectangular in form. Extending longitudinally into this body to the wall-A is a cylindrical bore B the diameter of which intersects the top line of the main body. In the top of the body A are opposite parallel guideways C. These guideways GXtGIldtllG full length of the body. The base line of these guideways C and the top line of the wall A correspond. Inserted in and fitting the bore B is a parallel screw D, this screw is threaded its. entire length. One end D of this screw is faced to butt up against the wall A and the other end D is faced off flush with the front end of the body A. In the end D of this screw are a series of radial channels D Adjacent to the end D in the surface of the screw, is an annular channel D and between this annular channel and the end D are a series of radial holes D These holes may be arranged in parallel lines correspond ing with the number and position of the end channels D or they may be staggered. The channels D are adapted in size and shape to receive the angular end of a lever bar, and the holes D are adapted in size to receive the cylindrical end of the same lever bar. EX- tending transversely through the main body are holes E and inserted therein is a rod E The location and size of these holes and rod corresponds with that of the annular channel D in the screw and is adapted to hold said screw in the bore B and against the wall A Slidably supported in the guideways C is a clutch F. This clutch has an arched under surface F. This surface is threaded and thereby adapted to mesh with the threaded surface of the screw D. The sides F of the clutch are nearly flush with the sides of the body A. At one end of this clutch aretransverse double jaws F which project above the top F of the clutch. The inside faces F of each of these jaws forms an acute angle with the top of the clutch F Between the jaws the front of the clutch is recessed F to a depth corresponding with the depth of the radial channels D in the end of the screw, this recess permits the insertion of a lever into said radial channels when the jaw end of the clutch is flush with the front end of the body A.

When my register hook is constructed as described and illustrated it is put together and operated as follows. The screw D is inserted in the bore B and the rod E is inserted in the holes E and thereby engages the screw in the channel D This pin the ends of which are made flush with the sides of the body A resists the side pressure and thereby tends to prevent the jamming of the clutch in the guideways it also prevents the end D of the screw from being raised by pressure on the jaws F and any lateral movement of the screwwhich is free to be rotated in the bore B. The clutch F can be inserted at either end of the guideways and be moved into position therein by the rotation of the screw.

The rotation of the screw is effected by the insertion of the lever G either in the channels D or holes D The operation of the screw by the insertion of the lever in the holes is necessary when the jaw end of the clutch projects over the channels D and may be used when the clutch is required at the other end of the body A. By this construction I obtain the fullest limit of movement of the clutch, and easy and powerful adjustment in any position. The double jaws also cover the longest transverse engagement with the plates they are adapted to secure.

It is obvious that the holes E and the rod E may be threaded at either end, and as a screw, be an equivalent for the rod shown, hence I reserve the right to the use of a screw in place of the rod.

What I desire to secure by Letters Patent 1s:

1. A device of the kind described consisting of the main body having a bore, guideways, end wall, and transverse holes; the screw rotatably supported in said bore, said screw having radial end channels, a series of radial holes and an annular channel; the rod insertible in said transverse holes adapted to extend through said annular channel and hold said screw in said bore; the clutch slidably supported in said guideways in said body, said clutch having an arched threaded under surface adapted to mesh into said screw and said clutch being thereby adapted to be moved in said guideways by the rotation of said screw.

2. ,In a device of the kind described, the combination with the main body, said body having a longitudinal bore therein, adapted to admit a screw, lon itudinal guideways adapted to support a clutch, and holes adapted to support a rod extending transversely through said body and bore therein; of a screw adapted to fit said bore in said body, said screw having a plurality of radial channels in the front end and an annular channel in the threaded surface adapted to admit part of said rod and to be thereby retained in said bore in said body; and a clutch adapted to fit and slide in said guideways and to be engaged by said screw and to be moved in said guideways by the rotation of said screw.

3. In a device of the kind described, the combination with the main body having a longitudinal bore and guideways, and a rod insertible transversely through said body and bore therein; of a screw rotatably supported in said bore, said screw having a plurality of radial channels in the front end, an annular channel adapted to admit said rod and a series of radial holes in the surface of said screw between said front end and said channel; and a clutch slidably supported in said guideways in contact with the surface of said screw and adapted to be moved by the rotation of said screw in said body.

4. In a device of the kind described, the combination with the main body having a longitudinal bore and guideways, and a screw rotatably supported in said bore, said screw having a plurality of radial channels in the front end, a series of radial holes and an annular channel in the threaded surface; of means insertible transversely in said body adapted to enter said annular channel and to thereby retain said screw in rotatable position in said bore; and a clutch slidably supported in said guideways in contact with part of the threaded surface of said screw and thereby adapted to be moved in said guideways by the rotation of said screw.

5. In a device of the kind described, the combination with the main body, the screw rotatably supported therein, said screw having an annular channel, and means insertible in said body and said channel adapted to hold. said screw in said body; of a clutch slidably supported in guideways in said body, said clutch having an arched threaded under surface adapted to engage the threaded surface of said screw, said clutch being moved in said guideways by the rotation of said screw in said body in contact with the arched under surface of said clutch.

6. In a device of the kind described, the combination with the main body having a longitudinal bore and guideways, the screw rotatably supported in said bore, said screw having radial end channels and radial holes and an annular channel in its threaded surface, the means insertible transversely through said body and in said annular channel in said screw; of a clutch slidably supported in the guideways in said body, said clutch having a pair cfijaws and'an arched threaded under surface in contact with the threaded surface of said screw and thereby adapted to be moved in said body by the rotation of said screw.

WILLIAM L. HAMILTON.

WVitnesses JosEPH STAAB, THOMAS J. MORGAN. 

